Lol, I think you've just had one big lesson - with a bright child, many standard techniques are just not going to work! Best to establish that you're both on the same side, rather than fight battles many of which you can't win. My two top recommendations would be:
http://www.amazon.com/Unconditional-Parenting-Moving-Rewards-Punishments/dp/0743487486- this is a "why" book;
http://www.amazon.com/How-Talk-Kids-Will-Listen/- this is a "how" book. I think both are great books, *especially* for children with advanced-for-their-age reasoning skills.
